Hand-thrown bomb



Jan, 6, 1925.

A. CIANO HAND THROWN BOM B iled sept. s. 192s s sheets-sheet 1 Figi.'

Jan. 6, 1925. I .1,521,996

A. CIANO HAND THRowN BOMB Filed Sept. 5, 1925l i 3 Sheets-Sheet 2 5 ng.2. l

@MUM Jan. 6, 1925. l 1,521,996

A. CIANO HAND THROWN BOMB Filed Sept. 5, 1923 5 Sheets-Sheet 3 Fig.

Patented Jan. 6, 1925.

PATN' QFFQE.

ARTURO CIANO, F ROME, lTALY.

HAND-THRO/VN BOMB.

Application led September To all iti/icmz' may cof/tecra.'

Be it known that l, ARTURO CIANO, marine oilicer, late of the RoyalItalian Navy, a subject of the lifing of lltaly, residing at Rome. inthe Kingdom of l'taly, have invented certain ne w and usefulImprovements in Hand-'lllirown Bombs, of which the following is aspecification.

This invention relates to and comprises improvements in hand thrownbombs, the object of said improvements being to render the bombabsolutely safe while being handled or transported and at the same timeto ensure that it wil`l explode even when striking against softmaterials.

HQ bomb.

Figure 2 is a front view of the upper portion of the bomb.

Figure 3 is a cross-section of Figure 1.

Figure l is a view of the complete bomb, the View being orthogonalrelatively to Figure 2.

Figure 5 shows a detail.

As it is shown in the drawings the bomb is made of a shell 1, preferablywater-tight, of metal plate or other suitable mate-rial, provided on itsupper end with a filling hole 26 and with another hole closed with aplug 2.

Inside the shell the cavity 3 is designed to receive the percussiondevice, and the cavity 4l is designed to receive the locking device aswell as the third safety device forming a portion of the locking deviceitself. The percussion device comprises a striker with a stem 5 and aguiding' head 6, a liring pin 7. a cooking spring 8 and a percussioncap10. In the embodiment shown the stem 5 is connected with the guidinghead 6 by means of the pine 33 the pin 7 is fastened to the head of thestriker and the percussion- 5, 1.923. Serial No. 660,979.

cap 10 is placed in the plug 9 below the pin and communicating with thedetonator 11.

The locking device is formed of a trip lever, pivoted at 12, which. byspring is kept with its end 13 pressed against the sloping face 14 ofthe head 5 of the striker and with the other arm 15, whose extremity isshaped like a cheek with a spherical recess 1T, bears upon the ball 16.The lever is keptlocked in its normal position owing to the sainebearing upon the ball which pre vents the right arm from turningupwards, and through the thrust of spring 25 which prevents the leftarmfrom turning up, keeping it pressed against the end of the. striker.

The ball 16 is held in place by the spherical recess 1T, by a cheek 18provided on the upper head 19 of the bomb, and by the spherical recessof Ithe cheek 21 lixed upon a shoulder 22 which is integral with thesafety metal plate 20; the latter forming a second safety devicearranged between the lower edge 2a of head 6 and the cap-holder 10.'

The upper portion of the stem 5 ofthe striker is provided with a slot 23within which is lodged a tooth 28 of a plate 27 (Figure. The plate 27,which constitutes the first safety device, is connectedI to a Cotter 29by means of the ring 32 said Cotter in turn being connected with a heavyplate 30 which is held in place by a ribbon 31 wound upon the bomb.lVhen the striker' is uncocked the tooth 28 is held within the slot .3by means of the plug 2, but upon cooking the striker said tooth 28 maybe freely withdrawn from the slot 23.

The shoulder 22 is connected by means of a ribbon 31 which is wound uponthe lateral surface of the bomb head with the heavy plate aforesaid, thelatter being by means of the cotter 29, connected as stated, to thesafety metal plate 27 forming the first safety device. A

The shoulder 22 is connected also to the surface of the bomb by means ofa flexible tie, a ribbon or string, not shown in the drawing.

The above described system works in the following manner.

Before throwing the bomb the end of the stem 5 of the striker ispartially pulled out from its lodging, until the end 13 of the releasinglever sliding along the side of the head 6 is ycaused to automaticallybear against and below the edge 24 of Said lll) head; in this Way thestriker remains cocked PAfter the striker has been cocked, the plate 27is drawn out, which forms the first safety device, by pulling out thetooth 28 from slot 23 and in this Way is Withdrawn also the cotter 29which retains the plate 30.

Upon throwing the bomb, the plate 30, which is no lonO'er retained bythe Cotter, acting on account of its own Weight unWinds the ribbon 31Wound upon the bomb, Whereupon drops doivn together with the plate 30,the ribbon 31, the shoulder 22, the stop cheek Q1 fixed to the shoulder22 and the safety plate 2O forming the second safety "device) Which isintegral with the shoulder.

After the removal of the shoulder 22, and the parts connected therewiththe ball 16 is kept in its place only by the cheeks 17 and 18 andthrough the action of the radial pressure exerted by the cheek 17 at theend of lever 4L.

It is to be noticed that the vertical diameter of the ball 6 passessomewhat inward the right hand edge of the bearing surface of the cheek17 besides the length of the arms of the lever 4 is such that the radialpressure on the bearing points of the ball is much less than the tensionof spring 3 of the striker.

When in the above conditions of equilibrium of the ball the projectilestrikes, no matter how slightly against anything, the ball, by effect ofinertia, shifts laterally. The end 17 of the lever lmay then freely turnupward and the striker by being released may strike against thepercussioncap.

It should be noted that the system constituted by the parts 30, 31, 21,2O unwinds upon throwing the bomb but remains connected to the bomb andacts as a flexible rudder Whilst the bomb travels along the descending'branch of the trajectory. The length land Weight of the steering deviceare such as to keep the bomb steered and to cause it to strike theground in the best position for the operation of the ball.

I claim as my invention:

In ahan'd-throivn bomb equipped with successively acting safetydevicescontained in the head of the bomb, the combination With thelocking lever, of a ball being engaged by a spherical recess formed onthe arm of said locking lever and constituting the last safety device, acheek provided in the head of the bomb in engagement With the said ball,and a shoulder in the head of the bomb formed also with a cheek bearingagainstthe said ball, the said shoulder being' a portion of thepreviously acting safety device automatically eliminated during thetravel of the bomb.

In testimony whereof I affix my signature in the presence of twosubscribing` Witnesses, this 20th day of August, 1923.

ARTURO CIANO.

Viitnesses Doe'ronNo LABOGGETTO, VILHELM SCEMD).

